Process for forming metal-second phase composites and product th

Details Process for forming metal-second phase composites and product th Process for forming metal-second phase composites and product th

1986-11-05

1988-06-14

Brody, Christopher W.

Alloys or metallic compositions

Ferrous

Processes

420590, C22C 110

Patent

active

047510480

ABSTRACT:
A method is taught for the introduction of in-situ precipitated second phase materials, such as ceramic or intermetallic particles in a metal matrix, to a host metal. When an initial solvent-assisted reaction is utilized, metal-second phase composites having highly superior properties may be obtained. The invention may utilize the reaction of the second phase-forming constituents in a solvent metal medium to provide an intermediate material of finely-dispersed second phase particles in an intermediate metal matrix, in the form of a porous mass or sponge. Any desired loading of second phase in the final composite may be achieved by the admixture of this preformed intermediate material having a relatively high content of particulate material, with a molten host metal. Exemplary materials include titanium diboride in an aluminum matrix and titanium carbide in an aluminum matrix.

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